<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>昙花盛开效果</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="flower">
        <div class="petal petal1"></div>
        <div class="petal petal2"></div>
        <div class="petal petal3"></div>
        <div class="petal petal4"></div>
    </div>
    <script src="script.js"></script>
</body>
</html>